# [texhax] bug in list of figures

Tue Jul 19 22:22:10 CEST 2011

On Mon, Jul 18, 2011 at 06:51:45PM -0400, T.M. Sommers wrote:

> On 6/27/2011 10:15 AM, T.M. Sommers wrote:
> >I believe this problem should be classified as a genuine bug, not
> >a (mis)feature.
> >
> >I have a figure that appears very early in the first chapter of a
> >book. It appears in the first column (using \twocolumn) of the
> >first page of the chapter, under the chapter title but before any
> >other text. So far, so good.
> >
> >The problem is that in the list of figures this first \addvspace
> >appears after, not before, this figure, and it is thus separated
> >from the other figures of the same chapter, which is ugly.

> Here is a sample that demonstrates the problem.  I'd appreciate some
> feedback on whether this is a genuine problem or whether I am doing
> something stupid.

> \documentclass[oneside,twocolumn]{book}

> \begin{document}
>
> \listoffigures
>
> \chapter{one}
>
> Some random text. Some random text. Some random text.
> \begin{figure}\centering Text in float.\caption{Caption}\end{figure}
> Some random text. Some random text. Some random text.

It's a problem of \chapter in class book' in twocolumn mode.
The chapter head is put as kind of float object at the top of the
page. However this does not include the space writing for the
list of figures. That is done at the start of the column text.
However the first figures comes before and therefore its
caption is put before the space.

Try the following fix:

\makeatletter
\def\@chapter[#1]#2{%
\ifnum\c at secnumdepth>\m at ne
\if at mainmatter
\refstepcounter{chapter}%
\typeout{\@chapapp\space\thechapter.}%
{\protect\numberline{\thechapter}#1}%
\else
\fi
\else
\fi
% Fix: \chaptermark and \addtocontents are moved
% in \@topnewpage if twocolumn is active.
\if at twocolumn
\@topnewpage[%
\chaptermark{#1}%
]%
\else
\chaptermark{#1}%
`